Grease gun



H. B. HERSHINGER GREASE GUN sept. 29, 1925. @555,711

Fixed oct. ze, 1921 2 Smets-Sham 1 lll I I v l *""lllllllluw Imaz/ca?? H. B HERSHINGER cixaisms aus und oet. 2e, 1921 2 sheets-snee: 2

Sep. 29, 1925. 1.555,7l

Patented Sept. 29, 1925.

UNIT-ED STATES ATENT OFFICE.

Emir ze. anaemia-ena, onf cnicaeo, immers.

cnnasn GUN.

A application mea october so, ios'i. serial iro. 510,474.

To all fwlwm t may concern.'

Be it known that I, HARRY B. HausniNcnR, a. citizen ofthe United States, residing at Chicago, county of Cook, 1 and .6 State `of Illinois, have invented certain new and usefulfIm rovements in"Grease Guns, of which the ollowing is a specification.

My invention relates more particularly to grease guns ofthe cartridge type, that is, those which ma be opened up for the reception of a re cartridge and among the objects of my invention are: to provide for convenient refilling-of grease guns; to provide an improved construction of 145-- grease gun; to provide aI grease gun of such construction that the grease container can be conveniently removed and replaced; and such further objects, advantages and capabilities as Will-later' more fully appear.

My invention further resides in the combination construction and arrangement of arts illustrated in .the accompanying rawings and, while I- have shown therein preferred embodiments, I desire the same 5 to be understood as illustrative only and not as limiting my invention.

In the drawings annexed hereto and forming a part hereof:

Fig. 1 is a detached perspective viewof a construction according to my invention.

Fig. 2 is a fragmentary longitudinal sec.

' tion of such a construction. v

Fig. 3 is a cross-section vsubstantially alcng the` plane indicated by the line 3 3 1g. l Fig. 4 is a section substantially along the plane indicated by the line 4 4 Fig. 2.

Fig. 5 is a section substantially along the plane indicated b y the line 5 5 Fig. 2. 4 Fig. 6 is a section substantially along the plane indicated by the line 6 6 Fig. 2.

Fig. 7 is a view, partially in section, of acartridge for the refilling of this gun.

Fig. 8 is aplan viewv of a positioning and holding washer .to be attached to the nipple of the cartridge. Y

Fig. 9 is a longitudinal section, shown partially broken away, of a modified form of the grease n to be used with a modified .form of cartridge.

f Referring more in detail to .the annexed drawings, numeral 1 -designates in general the body of the grease gun having cut out of one wall thereof a door 2, which door is hinged as at 3 to the main bod portion so that it may be swung open. portion 1 1s preferably cylindrical in form he body and has its ends provided with means, preferably screw threads, for the attachment of capsfi and 5, the former being referred to herein as the manipulator cap and the latter as the ejector cap. i

Reference to Fig. 2 will show that in cutting outthe ldoorI 2 a cylindrical ring or band 6- is left intact at the manipulator en d of the grease gun and a similar ring 7 is left at the ejector'` end thereof. It will therefore be obvious that the caps 4 and 5 may be advanced .to the position shown-in Fig. 2 to overlap the ends of the door 2 and therebyl hol the. same in closed position, or, on the other hand, these caps may be partly withdrawn so `as to free the ends of this door and permit the same to be swung open. Secured inside of the u vper ring 6 is a ring 8 having a flange 9 willich overlaps the edge of plunger 10 to prevent the same from being entirely withdrawn from the grease gun. This plunger 10 is pivotally secured to the actuator bolt 11 by means cfa screw or the like 12, the actuator.

bolt being provided with 'some sort of manipulator means 13, such as a hand wheel.

Inside the ejector end of the gun is a ring 14, fitting tightly or secured to the band 7, this ring serving as an abutment l for a perforated washer 15,k provided on opposite sides with lugs 16 and 17 which extend through perforations 18 and 19 in opposite sides of the grease gun. It will be noted that a part of the ring 14'overlaps the door 2 to serve as an abutment for one end thereof, while a portion of ring 8 similarly overlaps the opposite endfoffthefdoor v 2 to serve as an interior abutment for this end. From Fig. 1 it will be noted that ring 14 is partly cut away as at 20 tofpermit the screw-threaded nipple '21 of the cartridge 22 to be slid into place as thc cartridge is being inserted. When the cartridges are made, theyf'are each provided with a piston means 23, such asa circular ioo 3 iece of leather or the like. This'remains 1n the cartridge when it is inserted in the grease gun so that when the hand wheel 13 is turned the plunger 10 will be forced down against the piston 23 and will cause the same to be advanced to move the grease out of the cartridge. This grease then passes out through nip le 21 and eJector tube 24 to be a lied w ere desired.

Cap 5 is provi ed centrally with an apertured boss 25 which is screw-threaded for attachment to the nipple 21 and for the reception of a correspondingly screw-threaded end of the ejector tube 24. It will be seen om the above that when the parts are assembled as shown in Fig. 2 and the hand wheel 13 is turned the grease will be forced outwardly through the nipple 21 and the tube 24 as stated above. Y

-It should be noted that an internally and externally screw-threaded washer or nut 26 is applied to nipple 21 to hold the same 1n place in the aperture of the grease gun. Also ring 15 is internally serew-threaded for application to the external screw-threads of nut 26 so that, when applied in the posltion shown in Fig. 2, ring 15 becomes, in effect, a part of the cartridge, though it is, in reality, a part of the grease gun and should be removed from an empty cartridge and applied to a refill before the same is inserted in the grease gun. When the cartridge is in place, as shown in Fig. 2, lugs 16 and 17 will extend through the wall of the grease gun and will prevent rotation and longitudinal movement of the cartridge as the handwheel is turned. There will, however, be rotation of bolt 11 with respect to plunger 10 as indicated above. When 1t is desired to remove the cartridge, `it is only necessary to unscrew the caps 4 and 5 until the door is freed, then open the door and push on the lug 16 until the cartridge slides out. The operation of refilling is merely the reverse of the operation of removing the empty cartridge. It will be found prefer-` able in practice to supply each of the cartrid es with a cap 27 to prevent dirt from getting into the cartridge. A plug or cap for the nipple will also be provided.

In the form of my device shown in Fig. 9, a flanged ring 8 may be used or a mere fiat ring 28 may be tightly secured within the manipulator end of the grease gun in any convenient way as by a tight fit, brazing or screw-threading. In this form of my device a groove 29 is provided around the interior of the gun for the reception of an outwardly flared end of the cartrldge, the piston 23 being carried by the plunger and normally remaining lixed thereto. With the arrangement as shown in this ligure the external edge of the piston cannot strike the edge of the cartridge and become distorted but will be directed into the cartridge to firmly enrylng means to be moved lon gage the wall thereof and force the grease outwardly.

While I have shown and described herein specific forms of my device, it is of course understood that the specific descri tion of structures set forth above may be eparted from without departing from the splrit of my invention as set forth in this specification and the appended claims.

Having now described my invention, I claim 1. In a structure of the character described a container adapted to receive an auxiliary container therein, the first named container having a portion of its lateral wall cut away and hinged to the remainder of the container for lateral swinging, caps detachably connected tozthe ends of the container and adapted, when in fully applied position, to hold the cut away portion of the wall in closed position.

2. In a structure of the character described, a cylindrical container having a portion of its cylindrical wall cut away and hinged as a door to the remaining portion, said remaining portion having at its ends entire cylindrical portions provided with means for the attachment lof caps, and caps attached to said ends and capable of overlappin the ends of the door to hold the same c os'ed. Y

3. In a grease gun, a cylindrical body portion having a door intermediate its ends hinged thereto, an end of the body and the adjacent part of the door being provided with means for the attachment of a closure cap, a closure cap attached thereto and car- 'tudinally through the cap to thereby force t e contents of the grease gun therefrom.

4. In a grease gun, a cylindrical body portion having a door intermediate its ends hinged thereto, an end of the body and the adjacent part of the door being provided with means or the attachment of a closure cap, a 'closure cap attached thereto and carrying means through which 'the contents of the gun may be ejected and applied where desired.

5. In a grease gun, a cylindrical body portion having a hinged portion intermediate its ends, said body and hinged portion having attaching means for the attachment of `end caps, end caps attached to the ends of the body portion and holding the hinged portion closed.

6. In a grease gun having a portion of its cylindrical wall hinged to form a door, the ends of the cylinder being screw-threaded for the attachment of end closure caps, rings iitting closely within the ends of the cylinder, one of said rings overlapping an end of the door to serve as an internal support for the same, and closure caps secured to the ends of the body portion and holding lthe f 39 for one endof a grease container.

l its'hinges.

neem; i.

door` closed or permitting it to be vturned on 7. In a cylindrica wall ends ofthe -cylinder bein having a portion of its screw-threaded :for the attachment of. end c osure ca s, rings fitting closely within the endsof` e cylinder, one of said rings overlapping an end of the door to serve as an internal sup ort for the same, .and closure caps secure to .the

' endsof'ithebodyportion and holding the ldoor-closed or permitting it to turned on its hinges, one of said rings being flanged,

' .a lunger gerable through the cap at the en i 'occup by' the flanged ring and of siichja size that its edge `will engage thef Bange when the plunger is withdrawn.

'8. In a. ase n having a portion of its if' ylindrica Wall 'nged to form a door, the

ends of the cylinder being screw-threadedy forthe attachment of end closure caps, rings fitting closely within the ends of the cylin- Her, one of said rings overlapping an end of 'the door to serve as an internal support for the saine,- closure caps secured to the ends of the body portion and -holding the door closed-or permitting it to be turned on its hinges, and a centrally apertured washer resting on said ring to serve as an abutment 9. In a grease gun having a portion of its cylindrical wall hinged to form a door, the ends of the cylinder being screw-threaded for the attachment of end closure caps, rings fitting closely within the ends of the cylinder, one of said rings overlapping an end of, the door to serve as an internal support for the same, closure caps secured to the ends of the body portion and holding the rings fitting closely within the ends of the -'cylinder,'one of said rings overlapping an end of th'e door to serve as an internal suprt :for the same,'clesure capsl secu'red 'to thev ends of the body portion and holding the door closed or permitting it to 'be turned on its hinges, said ring being notched on the .side adjacent the door to permit passage therethrough of the nipple of ,a replaceable grease container, and a centrallyapertured washerresting on said ring to serve as yan yabutment for one end of a grease container.

11. In a structure of the character ,de-

scribed, a container adapted to receivean inged to form a door, the

auxiliary container therein, the first named container having a portion of its ylateral wall cut away and hinged to the remainder of the container for'lateral swin 'ng, caps detachably connected to the en s of the containerand adapted, when in fully applied position, to hold the cut away portion ofthe .closure for the opening, end closure members connected to the body and cooperating with the closure of the opening for holding said closure in closed position.

13. In a grease gun, a body having an' opening in the side thereof for the insertion and removal of a container, a closure for said opening, end caps attached to the body and acting to hold the closure in place, sai caps when detached permitting the opening of said closure.

14. In a grease gun, a opening in the side thereof for the passage of a container, a closure for the opening, end caps connected to the ends of the body and overlapping the ends of the closure for holding the closure in closed position.

15. In a grease gun, a body portion having an opening in the side thereof for the passage of a container, a closure for said opening, means Within said body projecting beyond the ends of said closure serving l `9o body having an ico as an abutment for said closure, and means y on said body for holding said closure in position against said abutment.

16. In a structure of the character described, a cylindrical Vcontainer having a portion of its cylindrical wall intermediate its ends cut away, a door of the same shape as the opening hinged to one edge thereof, means engaging the ends of the container and the ends of the, door to entirely enclose a auxiliary container.

17. In a grease gun, a cylindrical body portion having va closure intermediate its ends hinged thereto, an end of the body and the adjacent part of the door being provided with means for the attachment of a closure cap. a closure cap attached thereto and having centrally arranged means to be connected to the outlet of--a container located Within the body portion.

`18. In a grease fgun, a body lportion y' threaded at its Iends and having a supporting ring fitting' closely Within one end, a capengaging the threaded 'end to serve as a closure therefor,a perforated washer within the body portion and resting on the ring -to serve asa supporty for an auxiliary container.

` 19. In a grease gun, a body portion threaded at its ends and having a support- Washer, said cap having an internally screw ing ringtting closely within one end, a cap threaded boss to inter-en age an auxiliary engaging the threaded end to serve as a. container having a, screw t readed ni ple. 10 closure therefor, a perforated washer with- III WIIGSS whereof, I hereunto su scribe 5 in the body portion and resting on the ring my llame t0 11h18 Specification.

to serve as a su port for an auxiliary container supporte on and secured to said HARRY B. HERSHINGER. 

